A project must have in your vault library, after all its FREE content and there is a lot to it.
Sound effects, particle effects, interactions, vehicle operation, flying drone, lots different modular static meshes with multiple LODs, hundreds of materials and textures. Blueprints to can be used for personal projects, games, learning purposes. This project will let you get a really good chance to learn the fundamental parts of level design.
This project can be found on Unreal Engine marketplace and downloaded for free:
https://unrealengine.com/marketplace/...